All Questions ⁺⁰237643 Questions

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239

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pls help

Christy is training for a race in the summer. Every day she jogs the same number of miles. She also rides her bicycle 7.5 miles each day. During a 5-day training period, she jogs and rides a total of 53 miles. Which equation to shows how many miles Christy read more ..

Guest Dec 13, 2022

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175

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Algebra

Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 180 meters per hour when walking across flat ground, and 250 meters per hour when walking downhill. One day, Carissa walks read more ..

Guest Dec 13, 2022

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209

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question

A type of wood has a density of 250 kg/m3. How many kilograms is 85,000 cm3 of the wood? Give your answer as a decimal.

Guest Dec 13, 2022

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235

4

+660

Solve for x:

Keihaku Dec 13, 2022

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184

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function

Let F(x) be the real-valued function defined for all real x except for x = 1 and x = 2 and satisfying the functional equation
F(x) + F((2x - 3)/x) = x.
Find the function F(x) satisfying these conditions. Write F(x) as read more ..

Guest Dec 13, 2022

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176

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need help

A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 75% magical syrup by volume (and the rest is just water), and blue potion, which read more ..

Guest Dec 13, 2022

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230

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quadratic

Let a and b be the roots of the quadratic 2x^2 - 8x + 7 = x^2 - 5x + 3. Compute a^3*b + a*b^3.

Guest Dec 13, 2022

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188

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angle bisectors

Let ABC be a triangle, and let its angle bisectors be AD, BE, and CF, which intersect at I. If DI = 3, BD = 4, and BI = 8, then find the area of triangle ABC.

Guest Dec 13, 2022

+1

216

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+11

Refer to the article 'Fire Up the Sun.' PLZ ANSWER ASAP PLZZZZZ

Refer to the article "Fire Up the Sun."
How does the text make a connection between an outside temperature of 85 degrees or more and the use of the solar-powered oven?
Responses:
A)It suggests that cooking outside on hot days is read more ..

JustGoKen Dec 13, 2022

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235

1

+146

Compound Interest

Hi! Could someone help me understand compound interest, specifically a step-by-step guide for how to calculate it? Much appreciated.

FreddieMercury Dec 13, 2022

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233

1

Identity

For a certain function f(n), the identity
(2n)/n - (2n)/(n + 1) = f(n) (2n)/n
for all nonnegative integers n. Find f(n).

Guest Dec 13, 2022

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183

1

help with homework i got a final tomorrow

At a given point in its orbit, the moon is 2.4 x 10^5 miles from earth. How long does it take light from a source on earth to reach a reflector on the moon and then return to earth? (speed of light is 3.0 x 10^8 m/s) in dimensional analysis please help read more ..

Guest Dec 13, 2022

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223

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quadratic

The equation y = -16t^2 + 28t + 144 describes the height y (in feet) at time t (in seconds) of a ball tossed up in the air at 28 feet per second from a height of 144 feet from the ground. In how many seconds will the ball first read more ..

Guest Dec 13, 2022

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183

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Probability

A bag contains five white balls and three black balls. Your goal is to draw two white balls.

(a) You simultaneously draw two balls at random. What is the probability that they are both white?
(b) You simultaneously draw two balls read more ..

Guest Dec 13, 2022

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231

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counting

Marvin the fly starts at (0,0). Each step, Marvin moves one unit right or one unit up. He is trying to get his home at (4,6). However, at (2,4) here is a frog that will eat him if he goes through that point. In how many ways read more ..

Guest Dec 13, 2022

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198

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help geometry

In triangle PQR, M is the midpoint of PQ. Let X be the point on QR such that PX bisects angle QPR, and let the perpendicular bisector of PQ intersect AX at Y. If PQ = 36, PR = 22, QR = 26, and MY = 8, then find the area read more ..

Guest Dec 13, 2022

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231

2

+64

Geometry with quadrilaterals

The question is in the image.

Chandalier Dec 13, 2022

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196

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Complex numbers

Find all the solutions to z^4 = -4 - 5z^2 in complex numbers.

Express all the solutions in the form a + bi, where a and b are real numbers.

Guest Dec 13, 2022

Dec 12, 2022

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213

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Inequalities

(a) Prove that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)^2 (c^4 + d^4)(e^4 + f^4) >= 32abcdef.
(b) Prove that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)(c^2 + d^2)(e^2 + read more ..

Guest Dec 12, 2022

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189

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math 123

During the past year in the maternity ward of a hospital in a large city, 516 males were born and 1359 females. If we can assume this data is representative of all births in the city,
What is the probability that the next baby born in this particular read more ..

Guest Dec 12, 2022

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171

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math 123

During the past year in the maternity ward of a hospital in a large city, 516 males were born and 1359 females. If we can assume this data is representative of all births in the city,
What is the probability that the next baby born read more ..

Guest Dec 12, 2022

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